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feat(util-create-request): create request package (#257)
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Diff for: ‎packages/service-types-generator/src/internalImports.ts

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@@ -424,6 +424,10 @@ export const IMPORTS: { [key: string]: Import } = {
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package: "@aws-sdk/util-buffer-from",
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version: "^0.1.0-preview.1"
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},
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"util-create-request": {
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package: "@aws-sdk/util-create-request",
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version: "^0.1.0-preview.1"
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},
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"util-error-constructor": {
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package: "@aws-sdk/util-error-constructor",
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version: "^0.1.0-preview.3"

Diff for: ‎packages/types/src/command.ts

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@@ -37,6 +37,7 @@ export interface Command<
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> {
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readonly input: InputType;
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readonly model: OperationModel;
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readonly middlewareStack: MiddlewareStack<InputType, OutputType, StreamType>;
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resolveMiddleware(
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stack: MiddlewareStack<ClientInput, ClientOutput, StreamType>,
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configuration: ResolvedConfiguration

Diff for: ‎packages/types/src/middleware.ts

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@@ -269,6 +269,14 @@ export interface MiddlewareStack<
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*/
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clone(): MiddlewareStack<Input, Output, Stream>;
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/**
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* same to clone, but only filter in middlewares when evaluation callback
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* function returns true.
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*/
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filter(
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callbackfn: (middlewareStats: HandlerOptions) => boolean
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): MiddlewareStack<Input, Output, Stream>;
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/**
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* Create a list containing the middlewares in this list as well as the
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* middlewares in the `from` list. Neither source is modified, and step

Diff for: ‎packages/util-create-request/.gitignore

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/node_modules/
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/build/
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/coverage/
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/docs/
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*.tgz
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*.log
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package-lock.json

Diff for: ‎packages/util-create-request/.npmignore

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/src/
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/coverage/
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/docs/
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tsconfig.test.json
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*.spec.js
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*.spec.d.ts
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*.spec.js.map
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*.fixture.js
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*.fixture.d.ts
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*.fixture.js.map

Diff for: ‎packages/util-create-request/LICENSE

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Diff for: ‎packages/util-create-request/README.md

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# @aws-sdk/util-create-request
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This package provides function to create request object from given client and command.
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You can supply either Node client or browser client. A common use case for it can be
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generating request object and then supply to presigners to create presigned url.
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When calling the `createRequest()`, the `initialize` and `serialize` middlewares
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from both client and command are extracted and resolved into a handler. This handler
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will return a promise of `HttpRequest` object. So any modifications happen in `build`
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and `finalize` middleware won't be reflected to generated `httpRequest` object. For
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example, the `Content-Length` header won't be included in the result.
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Import:
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```javascript
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//JavaScript:
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const createRequest = require("@aws-sdk/util-create-request").createRequest;
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//TypeScript:
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import { createRequest } from "@aws-sdk/util-create-request";
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```
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JavaScript usage examples:
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```javascript
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const S3Client = require("@aws-sdk/client-s3-node/S3Client").S3Client;
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const GetObject = require("@aws-sdk/client-s3-node/commands/GetObjectCommand")
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.GetObjectCommand;
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const request = await createRequest(
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new S3Client({}),
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new GetObject({
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Bucket: "bucket",
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Key: "key"
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})
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);
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/**
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{
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protocol: 'https:',
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path: '/js-sdk-test-bucket/key',
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hostname: 's3.us-east-2.amazonaws.com',
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body: null,
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headers: {},
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method: 'GET',
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query: {}
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}
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*/
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```
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TypeScript usage example:
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```typescript
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import { S3Client } from "@aws-sdk/client-s3-node/S3Client";
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import { GetObjectCommand } from "@aws-sdk/client-s3-node/commands/GetObjectCommand";
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import { InputTypesUnion, GetObjectInput } from "@aws-sdk/client-s3-node/types";
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import { Readable } from "stream";
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const request = await createRequest<InputTypesUnion, GetObjectInput, Readable>(
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new S3Client({}),
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new GetObjectCommand({
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Bucket: "bucket",
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Key: "key"
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})
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);
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```
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You can omit the generics in this function and rely on the type inference. In this
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way you will lose the type safety for insuring client and command comes from the same
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service.
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```typescript
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import { DynamoDBClient } from "@aws-sdk/client-dynamodb-node/DynamoDBClient";
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import { GetObjectCommand } from "@aws-sdk/client-s3-node/commands/GetObjectCommand";
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/*THIS IS WRONG, but TypeScript won't tell you*/
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const request = await createRequest(
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new DynamoDBClient({}),
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new GetObjectCommand({
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Bucket: "bucket",
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Key: "key"
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})
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);
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```

Diff for: ‎packages/util-create-request/package.json

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{
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"name": "@aws-sdk/util-create-request",
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"version": "0.1.0-preview.1",
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"scripts": {
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"prepublishOnly": "tsc",
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"pretest": "tsc -p tsconfig.test.json",
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"test": "jest"
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},
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"main": "./build/index.js",
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"types": "./build/index.d.ts",
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"author": {
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"name": "AWS SDK for JavaScript Team",
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"email": "[email protected]",
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"url": "https://aws.amazon.com/javascript/"
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},
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"license": "Apache-2.0",
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"dependencies": {
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"tslib": "^1.8.0",
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"@aws-sdk/types": "^0.1.0-preview.3"
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},
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"devDependencies": {
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"@types/node": "^10.0.3",
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"@types/jest": "^20.0.2",
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"@aws-sdk/middleware-stack": "^0.1.0-preview.4",
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"jest": "^20.0.4",
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"typescript": "^3.4.5"
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}
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}

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